Lens-grooving machine



' oct'. 9,1923. 1,469,926

l G. KIRKEGAARD LENS GROOVING MACHINE .2 Sheets-Sheet 1 Filed May 5,v 1919 INVENTOR Oct. 9 1923.

G. KIRKEGAARD LENS GRoovING MACHLNB Filed May 5,

1919 2 Shtl-Sheet 2 ATTORNEY' O use it enablesy one attendant Patented @QL 9, 1923.

riesen ma. f

GEORG KIEEEGAAED, or EnOOKLYnNEw Yoan, nssrcNoE 'ro `INTER-STATE OPTIOAI-J CORPORATION, or BROOKLYN, NEW Yoan, E CORPORATION OE NEW Yoan.

'Application inea May 5, 191e. seriaifNo. 294,392.

To all whiom tmc/y concern'. w

Be it known' that I, GEORG KIRKEGA'AED, acitizen of the Unitedy States, and a resident yof Brooklyn, Kings. County, and State of New York, have'invented certain vnew andv useful improvements in Lens-Groovin'g Machines, of which the following 1s aspeciiicaf tion, reference being 'had tothe ,acco-nngany permit the cutter to follow thesurface and' contour ofv thef glass, it *has been necessary' to havelin addition toa pivoted `frame, a

y One object of thi-s invention is to provide i a machine whichjpermitsthe cutter to auto'-l r adjustable' means which automatically con;

' trols thedrivingfm'eans so that vthe cutter maybe stopped after a predetermined number of revolutions of the glass. vThis control feature is a veryfdesirable one in that byits to operate va numberof machines: f l f j "1 Another object is to provide aV novel method Yof V"driving the cuttingV memberv which isy movable vin vtwo horizontal directions, without Vproducing slack yinthe driv-r Y K I y vof housing 23 to adjustthe spring pressure.

ing means.

rStill'another object isito provide a construction in which the axis of the .cutting tool is at all times maintained parallel tothe axis on which fthe' lensis being turned, and this without the necessity of using a shaft slifdably'mounted.

lncrder -thatjfmyginvention may be thor-Y i oughly. understood YI vwill now proceed" to describe lthe'.` same-fin :the following specification, and will thenpo-int' out the novel flea-V tures thereof in appended claims.

Referring to the drawings:

Figure 1 i-svan elevatlon-vlewfofa ma chine, Vpartlyin section, 'embodying the invention'.-

Figure Q'is a plan view OfFigure 1.

' Aliigure .3 is an end elevation ofA Figure 2,

partly in se'ctiong'takenv on the line 33 and looking in the 'directioniof the arrows.'

travelling arm and contact for clearly the vmanually adjustable means for ypositioning' theV cutter with respect vto vthe glass andthe arrangement'- of the pivoted standardv and supports therefor.

\ Figureijis a--rn'ore vdetailed viewof the the control circuit ofthe motor;

Figure 6 is adview showing thefindicat'o'r for :adjusting the machine for mined cutting period."V l Y y The base of'ithe machine comprises the sides 1 and the -top;2 forming a substantially enclosed structure in which is arranged a mo.- tor 3 and suitable driving means'including awormV gear connection .41,5 and a pulley 6, driven through the .shaft Y'lofthe motor,.the

a' predeter- 1' motor beingsuitably supported fromthe top 2 bybo'lts 8 and" shaft Vand gearing by. the'brackets 9,101.2 vertical shaft 1l is driven by thelgear,5r and has a worm mount- 'Y ed on each end"12,-1'3,.each worm in turn f engagingworm gearsll and 15 respectively.

The worm gear 14 is mounted on a shaft 16 Vjournaled in arms 17, 18 of 'agrigi'd support 19 mounted on the. top 2.' AYAthird larrnQ'O of the support19 serves'to -hold'af plunger 21 having a head22 fin'alignment with shaft V16, the plunger 21 being rotatably carried VVin' thefhousing 23'which. has a spring 24 therein tending to pushthe plunger'toward the shaft 16.v The lens 25 -is placed. be.- V tween'theplunger head2?, and` the end of shaft 16,.v and is'rotatably carried there-between. vA :s crew26` is provided' for thel end `thereonV which travels overa I.contact segment 30 carried bythe `adjustable block 31 which in turn maj7 be rotated manual'lyby the indicator V32 to' the desiredr position which Iwill depend fupon .the time of: the grooving operationv or? the number Of turns of thelens.4 An indicating scale 33 is provided on Vthevfacefof one' ofthe-sides 1V where the indicator 32 passes therethrough, so that thep'ointer Bilofthefindicator 32 may befmoved to; 'desired position. YOn the opposite side of thebaseV is mounteda socket 35,V` which is connected in series with lthe-inotor 3 fand indicatorcontacts 29 and 30,'and from which power mayfbe'taken. It is ap-` parentthat theindicatorV may bey set "at the 'desired 'point and after the 4motor has J.p'v

10o if erated for a'sui'licient periodit will be au.- tomatically stopped, the ,indicator and its cooperating parts thus functioning as an au-A tomatic stop. lt is this feature that readily enalolesfoneV operator totend to a number of machines.

The cutting tool'l' is carried von one end. of a shaft YS7-having bearings 38, 39,

arm 40 `connects the tivo .hearings and is pivm; Y otallysupported `at each end by tivo sta-nd- Yards 41,42 Whichstandards in turn" have their lower ends l pivotally supported in blocks 43, 44 cai ied rigidly ont each end of ashaft 45.l lt istobe 'noted however, that the pivotal connections between thesefblo'clrs and Atie arm 40 will onlypermit a parallel movement. off the cutting tool'. X'ially with y respect to the shaft i6 rotating 'helens2- Theshaft 45 is supported .atfeaeli end `by eones46-'47 adjus'tably carried blocks 48, 49 rigid on the topV 2y ofthe base; Nuts 50, lare provided for adjusting the cones o 46-4? for the bearing-'oi' shaft 45. is to be noted that by mounting the .sha tinthis manner, thata pivotal Vin@vementv oi" the cut-l 'tingf'tool isV provided'ivliich is at right-ain glee tothe aboveinentioned pivotal movern'ent `andso' will thus `permit itV to'inove ra# dial'ly `With respect: to the rotatii'ig lens. VThis. latter Inovenientl ivillfenable the grinder to follow the periphery of the lent grinder toztolloiv the 'change of surface con-V tour oi the lens, n abutment 52' adgnstably carried on an' arm 53 rigid with the slot bearing 39 by theeliding arm F15-and screvvV 56 is provided lor adjr-sting the movement `radially and. a threaded screw cennectionis gevernedl he nut 57 at the end lcf-abutnieninfor Vadjusting the abutment axiallyln itis .rent that the-abutment rides over the suriaee. contour of the lens and thusv maintains .a lined rela@l tion with thexcutter, thuskeeping itparallel with the( lens. Weight '58 von a guideV pre-vided to engage a cani 6.4"carried1by l post70 onthet-op .2, when it is desired to move4 the grindery to an inoperative posi-Y tion. r" i* @n the shaft 45'are. rotatably mounted pulleysV 65, 66 the! pulley 66. being driven from the pulley 6 bya beit 67, and thepul# ley66 in turn driving the grinder 36 through pulley 68 through therbelt 69' and Y While the Y former Yaxial movement Vwill enable theV urled pulley whichturns'Withe-pulle By this method of belting to drive the grinderY it is to be noted that neither the axial or radial movementof'the grinder causesmslaclc in .the drivingbelts,VV This is obviate'd by having a driving pulley at `j the anis of the i Y 1Vilhile l have'described' but oneri-preferred forni of my invention, 'changes andinodfica;l tions may be madethereinWithout depart? ingr` from the spiritl and' scopefof this-inventionhm Y n Y' lVhatf Inclaim iai Y 1 n l. In a machine for' groot/ing Vleneesga lined snlirport'in' which .a lensv niayybefretaeably mounted, Va cutterifor 'groovingthe-lens,

means suppertingleaid cutter, said ineens infr cluding a support pivoted to permit meve ,ment oit-1 the cutter .ra'diallyrof the1lene3-an arm, a shaft journaled therein'to'carr'yrsaid Cutter, `and a Vplurality 'of sta'nd'ardsgone:'end

ara-ted points' onsaidarm and theother ends Y 'n ofv each being nivotally,eonnectedf-to saidsupport at .separated pointswhereby" saidv shaft has axial nliove-rnentv parallel Withfthei 5' axis ofthe lens.` f Y g Y :2. ln a ina'chinetorgroovlngf lenees,` a-

'.fixed support in Whichl a lens 1fnay"be-'rotat-V ably mounted,r a.- cutter ''or/,groi'ing the lens,r means supportingsaidl cutter, said vleo means including Ya .supportpivo-ted to per` j mit movement o'f'fthelcutter radially:of the lensql Aan ar1na shaft jeurnaledI therein to` vcarry said cutter,- a plurality'of:standards,

one end of each being pivotallysconnect'edto e separated points on saidarmandfthe other ends of each beingfpivotallyconnectedgto`y said support at separated" points Vvvlieiaeby said cutter arranged to rnaintaidar uni-form Y said'ciitter.V Y f 3..In machine for grooving lenses',vv a fined support in which al lens mayberfotfat#i ablymounted, a cutter torgroovingthe lens, means supporting said cutter, saidrmeansin-f cludi-ng a support pivoted to permitxmovement of the cutterradially off-the lena,

v shaftljeurnalejd therein-to'carryzsaid cutter, a: plurality of standards; one endet each being .pivotallyfi'connected to separated pointsron said arm and the other endsf'of each being pivotall'y connectedfto sai-d support at separated points'whereby-"said elia-tt has axial vmovement parallel with theaK-is ot the lens, a-ndlme'ans fergdriving said cut-v ter arranged to :maintain` a uniform `vfflrifv'ing effort irrespectiveV of the vposition ofV .said

drin-ino' leffort irrespective "of the. position 'of tatably mounted, a rotary cutter, a shaftV therefor, an adjustable abutment cooperating with the face of the lens to position theV cutter with respect thereto, and movable means for supporting said shaft arranged to maintain parallelism between said shaft and the axis of said lens when moved axially,

said means including a shaft pivotallyl mounted to permitv limited rotative movement radially of the lens, standards pivotally mounted with respect of said said shaft to permit Ymovement in a plane normal to the rotary movement of said shaft, an arm pivotally supported by said standards, bearings carried by said arm for the cutter shaft, means includinga weight for holding Asaid cutter in yielding engagement with the vedge of the lens, and means for maintaining said abutment in operative engagement with said lens. y l

In a machine for grooving lenses, a fixed support in which a lens may be rotatably mounted, a cutter for grooving the lens, a shaft therefor, a support for the shaft pivotally mounted to permit movement axially and radially of the lens to maintain the axis of the cuttervparallel with the axis of the lens, saidV support comprising a frame having two sets of parallel members normal to each other with their ends pivotally conp nected.

ing an index and a said lens and said cutter actuated by said motor, manually adjustable means'for setting said machine for a predetermined period ofv operation, means for automatically interrupting said motor circuit after a predetermined period of operation, said means in- Y cluding a contact connected to be driven by one of the driving means and a contact havgraduatedv scale cooperating therewith.

7. In a'machine for grinding la lens', aA fixed support in which a lens may be rotatposition said tool with respect thereto, means for 'yieldingly engaging said tool. with the periphery of said lens, a motor for rotating saidrtooland lens, and means fory varying the operative period of said motor.

said tool and Cooperating with said lens to Y 8. In a machine for grinding (a lens, a V

fixed support in which a lens may be rotatmovable parallel with the axis of said lens,

an adjustable abutment in fixed relation with said. tool and vcooperating with said lens to position said tool with respect'thereto, means Y for yieldingly engaging saidtool with the periphery of said lens, a motor for rotating said tool and lens, a motor circuit, manual meansfor closing said-circuit and automatic means for opening the motor circuit after a t predetermined grinding period. Y

In witness whereof, I have hereuntoset my hand this 2nd day of May, 1919.

- GEORG KIRKEGAARD.

In presence of Y. j

VVMAX SIEGEL. 

